6818857742 has 4 divisors (see below), whose sum is σ = 10228286616. Its totient is φ = 3409428870.

The previous prime is 6818857691. The next prime is 6818857757. The reversal of 6818857742 is 2477588186.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1704714434 + ... + 1704714437.

It is an arithmetic number, because the mean of its divisors is an integer number (2557071654).

Almost surely, 2^6818857742 is an apocalyptic number.

6818857742 is a deficient number, since it is larger than the sum of its proper divisors (3409428874).

6818857742 is a wasteful number, since it uses less digits than its factorization.

6818857742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3409428873.

The product of its digits is 6021120, while the sum is 56.

The square root of 6818857742 is about 82576.3752050185. The cubic root of 6818857742 is about 1896.2861657992.

The spelling of 6818857742 in words is "six billion, eight hundred eighteen million, eight hundred fifty-seven thousand, seven hundred forty-two".